Lewiston (ID)
December
Weather in Lewiston, Idaho for December 2026
Your guide to Lewiston weather in December - trends and predictions
With an average of 3 snowy days, Lewiston usually enjoys a light touch of snow in December.
In general, the average temperature in Lewiston at the beginning of December is 3.9 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 5.3 °C by the end of December.
The climate of Lewiston in December is notably wet, with an average of 15 rainy days, and a total of 129.1 mm of precipitation.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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13
Dry days
15
Rainy days
3
Snow days
6°/0°
Temperatures
13 km/h
Avg max wind
84 %
Avg humidity
Lewiston Weather December
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Temperatures trend during December in Lewiston
See the weather trend as well as the moving average line
December weather in Lewiston day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Partly cloudy | 6° /-2° | 0 mm | 0 cm | |
| Dec. 2 |  Sunny | 4° /-1° | 0 mm | 0 cm | |
| Dec. 3 |  Overcast | 2° /-3° | 0 mm | 0 cm | |
| Dec. 4 | Overcast | 1° /-5° | 13.6 mm | 0 cm | |
| Dec. 5 | Overcast | 4° /0° | 6.7 mm | 0 cm | |
| Dec. 6 | Overcast | 4° /0° | 0 mm | 0 cm | |
| Dec. 7 |  Moderate or heavy rain shower | 6° /-1° | 3.4 mm | 0 cm | |
| Dec. 8 | Moderate or heavy rain shower | 8° /1° | 6 mm | 0.8 cm | |
| Dec. 9 |  Patchy rain possible | 6° /-1° | 3.8 mm | 0 cm | |
| Dec. 10 | Overcast | 7° /2° | 17.4 mm | 0 cm | |
| Dec. 11 | Overcast | 8° /4° | 0 mm | 0 cm | |
| Dec. 12 | Patchy rain possible | 8° /2° | 0.2 mm | 0 cm | |
| Dec. 13 |  Light freezing rain | 9° /-1° | 0.6 mm | 0 cm | |
| Dec. 14 | Moderate or heavy rain shower | 9° /1° | 7.5 mm | 0 cm | |
| Dec. 15 | Patchy rain possible | 8° /1° | 0.1 mm | 0 cm | |
| Dec. 16 | Light freezing rain | 5° /0° | 2.3 mm | 0.8 cm | |
| Dec. 17 | Light freezing rain | 6° /-1° | 9 mm | 0 cm | |
| Dec. 18 |  Heavy rain at times | 9° /0° | 5.8 mm | 0 cm | |
| Dec. 19 | Overcast | 8° /-2° | 4.9 mm | 0 cm | |
| Dec. 20 | Overcast | 7° /-1° | 0 mm | 0 cm | |
| Dec. 21 | Moderate rain at times | 6° /-3° | 0.9 mm | 0 cm | |
| Dec. 22 | Patchy rain possible | 7° /-1° | 5.5 mm | 0 cm | |
| Dec. 23 | Patchy rain possible | 7° /0° | 2.5 mm | 0 cm | |
| Dec. 24 | Moderate or heavy rain shower | 8° /1° | 13.6 mm | 0 cm | |
| Dec. 25 | Overcast | 7° /0° | 0 mm | 0 cm | |
| Dec. 26 | Moderate or heavy rain shower | 7° /0° | 8.2 mm | 0 cm | |
| Dec. 27 | Light freezing rain | 2° /-2° | 3.9 mm | 0.5 cm | |
| Dec. 28 | Moderate or heavy rain shower | 5° /-3° | 9.3 mm | 0 cm | |
| Dec. 29 | Heavy rain at times | 6° /-1° | 4.1 mm | 0 cm | |
| Dec. 30 | Patchy rain possible | 6° /-2° | 0.1 mm | 0 cm | |
| Dec. 31 |  Freezing fog | 4° /-2° | 0 mm | 0 cm | |
| Next | |||||
Important Notice
Our weather forecast for Lewiston in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Lewiston forecast closer to your planned date for the most up-to-date weather information.
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Lewiston in December - FAQ
What are the expected maximum and minimum temperatures in Lewiston during December?
Prepare for cooler days with highs just around 6° and colder nights, dipping below 0°.
How much rainfall should be expected in Lewiston during December?
Significant rainfall exceeding 129.1 mm is expected in Lewiston during December, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Lewiston in December 2026?
Lewiston experiences an average snowfall of 2.095 cm during December, occurring over 3 days.
What are the typical wind conditions in Lewiston during December?
The average wind speed in Lewiston during December is 13 km/h, suggesting breezy to windy conditions, depending on your activities.
Lewiston snow forecast December 2026
Track daily snowfall levels and discover Lewiston’s snowy potential this December ❄️
On average, Lewiston sees 3 snowy days during December, with approximately 2.1 cm of total snowfall.
December rainfall patterns in Lewiston
Explore the daily rainfall trends and prepare for Lewistons December weather 💧
Typically, Lewiston has 15 rainy days in December with a total of 129.1 mm of rainfall.
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Where is Lewiston?Get accurate weather forecasts for Lewiston, located at latitude 46.417 and longitude -117.018. Stay updated with localized weather information tailored for Lewiston.
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